Combined supply controlling and feed regulating apparatus



H. A. PALMER 2,013,576

COMBINED SUPPLY CONTROLLING AND FEED REGULATING APPARATUS Sept. 3, 1935.

Filed May 31, 1934 3 Sheets-Sheet l mm Harryl Rzlmer Sept. 3, 1935. H, A. PALMER 2,013,576

COMBINED SUPPLY CONTROLLING AND FEED REGULATING APPARATUS Filed May 31, 1934 5 Sheets-Sheet 2 H. A. PALMER Sept. 3, 1935.

COMBINED SUPPLY CONTROLLING AND FEED REGULATING APPARATUS 3 Sheets-Sheet 5 Filed May 31, 1954 avwc/wio'r/ Harry fLI'almer Patented Sept. 3, 1935 t UNITED STATES PATENT OFFICE COMBINED SUPPLY CONTROLLING AND FEED REGULATING APPARATUS Harry A. Palmer, Malden, Mass, assignor to Palmer Inventions, Inc., Malden, Mass., a corporation of Massachusetts Application May 31, 1934, Serial No. 728,456

7 Claims. (Cl. 103-26) This invention relates to a combined supply switch to provide for the intermittent operation controlling and feed regulating apparatus deo the p p, a p y line leading from the Pu p signed primarily for use in connection with liquid to the receiving element, a feed element associated fuel burners, but it is to be understood that the wi h d r vin lement, an means for estab- S app atus is to be employed in any connection f r lishing communication between the structure and which it may be found applicable, and the inventhe pp y line, the structure d t e ece vin tiOn has for its object to provide, in a manner as element, and the structure and the tank to provide hereinafter set forth, an apparatus including a respectively for e pe a i n 0f he st uctu e in liquid receiving element, means for controlling the One direction by liquid from the pp y line to the 1 supply of liquid to said element and a service 0011- Switch, the Operation of the Structure in the DD l0 trolling element associated with the receiving ele- Site direction by liquid from the receiving e e nt ment. The latter coacts with the service conto close the switch and the conducting f t iquid trolling element to provide for a constant gravity supplied to Said structure f om the latter to the feed to a point of destination or consumption for tankn the li uid, such as a liquid fuel burner, and the Further objects of the invention are to p v controlling m a pr idi for t n g to be in a manner as hereinafter set forth, a combined intermittently supplied to the receiving element. s p y controlling a d d ulat appar tus A further object of the invention is to provide, for liquids which i comparatively mp in i in a manner as hereinafter set forth, an appal'a- Construction and arrangement, Strong, d a

m tus of the class referred to including means concompact, thoroughly efilcient in i s r ly astrolled from an overflow of liquid for intermittcntsembled, and comparatively inexpensive to set up. 1y supplying liquid to a controllable liquid receiv- T0 t e abov e ds ess ntially, and to others ing element and with said means acting to return which may hereinafter appear, the invention conthe overflow operating it to the source from which sists of such parts and such combination of parts 5 the liquid is taken by said means to supply the rewhich fall Within the scope of the v ion a ceiving element. claimed.

A further object of the invention is to provide, n t e draw in amanner as hereinafter set forth, an apparatus Figu e 1 is a front elevation of the combined oi the type referred to including a liquid supply pp y o oll ng feed regulating apparatus. a pump, a controllable liquid receiving element for Figure 2 is a vertical sectional view of the liquid intermittently receiving charges of liquid from the rece v ng ele ent looking f om the rear. pump, means for closing said element to the pump Figure 3 is a vertical sectional view of the at the end of each chargin period, means for switching structure. utilizing the liquid forced from the pump at the Fig r 4 is a f n elevation, broken w y, f 3' end of such period to make the pump inactive, and the switching structure.

means for utilizing a portion of the charge to Figure 5is adetail partly in section. make the pump active for a follower charge for Figures 6 and '7 are fragmentary views illustratsaid element. ing positions of the shifting member of one of A further object of the invention is to provide, in the float controlled valve shifting mechanisms as- 40 a manner as hereinafter set forth, a combined sociated with the receiver element. 40 supply controlling and feed regulating apparatus The apparatus is in the form of a unit including for interposition in a liquid feed line functioning at base I, a pump 2, a motor 3 for operating pump to maintain a perfect controlled gravity feed at all 2, a tank 4 constituting a reservoir for the liquid, times to a point of destination or consumption. a pedestal 5 extending upwardly from base I,

A further object of the invention is to provide, in a combined liquid receiving and service mechaa manner as hereinafter set forth, a unit formed nism 6 secured upon the top of pedestal 5, a. of a tank constituting a liquid reservoir, an elecliquid operated switching structure 1 interposed trlcally operated liquid supply pump communicatbetween tankd and mechanism 6 and communiing with the tank, an electric motor for operating eating with the latter and with tank 6, power line the pump, a liquid receiving element arranged conductors 8, 9 leading to motor 2, a feed line above the tank, motor and pump for intermittentl0 leading f D p 2 t0 anism 5, a valve ly receiving charges of liquid from the pump, a controlled by-pass ll extending from feed line l0 power line, a switch interposed in the line, a liquid to structure I, and a supply line I! Leading from counter-balanced structure arranged between the tank 4 to pump 2. The structure I is interposed tank and said element for opening and closing the in conductor 8. The pump 2 and motor 3 are supported upon the front of base I. The tank 4 is supported upon the rear of base I. The pedestal 5 i interposed between pump 2 and tank 5, and the latter as shown is of semi-annular form to provide a clearance for the pedestal. The supply line E2 leads from the lower portion of one end of tank #1. The by-pass l l is normally closed to line it by its controlling valve.

The mechanism 5 with reference to Figures 2 and i includes a vertical casing formed of a cylindrical body part it provided at its upper end with a removable closure l5. Arranged within and extended from the lower end of part i3 is an inverted cup-shaped circular member 15 provided with an annular shoulder i5 near the bottom of its outer periphery. Member 55 extends up into and snugly bears against the inner face of part l3, and the bottom edge of the latter seats upon shoulder H3. The top ll of member l5 has a pair of spaced aligning slots 18, 59 disposed at its diametric center and a pair of spaced aligning openings 2i aligning with the slots i8, 19. The walls of the openings are threaded. Formed integral with the upper face of member 15 and arranged between slot 58 and opening 25 and between slot 59 and opening 2! is a vertically disposed annulus 22 which in connection with the part 23 of top I] "i provides a lower combined liquid receiving and float chamber 24. A socket forming means 25 depends from and is disposed centrally with respect to the lower face of said part 23. Depending from the top I1 and integral with the outer periphery of the means 25, as well as with the inner face of the body 25 of member 15 are spaced reinforcing webs 21.

Anchored to the body part i3 and arranged within the latter at a point between its transverse median and lower end is an inverted cupshaped circular partition member 21 which is spaced from and forms in connection with member I5 9. compartment 28 in which is arranged the float chamber 24, the latter being of less height than that of compartment 28. The top- 28' of member 2'! is formed with an axial opening 29 and also a row of aligning openings 35!, 3| and 32 disposed at the diametric center thereof. The opening 29 is arranged between openings 3|, 32. The opening 35 is positioned outwardly with respect to but arranged in close proximity to opening 3!. The openings 3!, 32 are arranged equidistant from the body 33 of member 27 and from opening 29. The openings 3i), 3! are arranged to align with slot is and the opening 32 aligns with slot 19. The member 21 provides the casing with an upper combined liquid receiving and float chamber Disposed diametrically of the upper portion of chamber 34 and anchored to body part l3 by the holdfast devices 35 is a cross head 36 formed of a horizontally disposed part 37, a vertically disposed part 38 integral at its lower end with one side of part 3'! and vertically disposed end portions 39, 4G. The part 31 at its transverse center is formed with a horizontal slot 4|. Formed integral with the parts 31, 33 at the transverse center of the cross head 35 is a vertically disposed channelshaped enlargement 32, open at each end, registering at its lower end with slot 4! and extending above part 38. Opposed side walls 43, 44 of em largement are lengthwise slotted, as at 45, 46 respectively. Formed integral with the end portion 35 and one end of part 38 is a vertical support 4! of greater height than end portion 39. Formed integral with one of the vertical faces of part 38 and aligning with support 41 is a pair of spaced enlargements 48, 49 arranged adjacent the side walls 43, 44 respectively of the enlargement 42. The enlargement 49 is arranged a greater distance from wall 44 than the distance between enlargement 48 and wall 43. The part 37 is formed with an opening 55 in proximity to support 41, a slot 5| in proximity to wall 4 3 and an opening 52 in proximity to end portion 40. The end Walls of slot 51 are beveled.

Arranged within the upper portion of chamber 34 is a pair of float controlled valve shifting mechanisms 55, 54 for a pair of closure valves 55, 55 respectively for shutting off respectively intake and for controlling discharge of liquid to and from chamber 34.

The mechanism 53 includes a vertically movable link 5? which operates through opening 52 and is pivotally connected at its lower end, as at 58 to closure 55. Pivotally connected, as at 59 to the upper end of enlargement 49 is a two arm lever 65. The arms of the latter are indi cated at 6! and 62. The arm 6| is of greater length than the arm 62 and is formed of upper and lower parts 33, 64 disposed at an angle with respect to each other. The part 53 is disposed at an inclination with respect to pivot 59 and extends downwardly through slot 5i. The part 64 is curved and extends in a direction towards the center of chamber 34, as well as across the vertical axis of the latter. The part 54 is of less length than part 63 and carries a weighting means 65 for normally maintaining lever 60 in the position shown in Figure that is to say, in a position whereby the closure 55 is elevated to non-closing position. The normal position of arm 62 with respect to pivot 59 is that it extends slightly upward at an inclination from its inner end. The outer end of arm 62 is pivotally connected as at 55 to the upper end of link 5?. The lower end terminal position of arm 6! and which extends across the vertical axis of chamber 34 is indicated at 61. The mechanism 54 includes a vertically movable elongated link 63 which is pivotally conneoted at its lower end, as at 59, to the valve 56. The link 68 extends through the opening 50, and is pivotally connected at its upper end, as at It, to ahorizontally disposed lever H intermediate the ends of the latter. The lever H is arranged over crosshead 35 and has its outer end pivotally connected, as at 12, to the upper end of support 41.

The mechanism 54 also includes a three arm controlling lever 14. The arms of the latter are indicated at l5, '56 and TI. The lever "is pivotally connected to the upper end of enlargement 48, as at 18. The arms 15 and 76 are arranged in endwise opposed alignment. The arm i5 is of greater length than arm 16, extends to ward the center of and across the vertical axis of chamber 34. The arm 17 is disposed at an upward and outward inclination with respect to pivot 78 and is arranged over arm 16. The free end of arm l5 has a beveled upper corner 15. Pivotally mounted upon the upper end of arm H, as at T9 and extended upwardly and outwardly therefrom is an angle-shaped shifting member 85 for the lever arm '5 l. The member 80 includes a rectangular intermediate leg 8|, an upper leg 82 and a lower leg 83. The legs 82, 83 are disposed respectively at obtuse angles with respect to the inner end of leg 8!. The outer edge of leg 82 is substantially of convex curvature and its inner edge straight. The outer edge of leg 32 is for riding against the inner lower corner of lever H for the purpose of elevating the letter on its pivot to raise the link 68 and in this connection see Figure '7. The inner end, lower end and upper end respectively of the legs 8%, 82 and 83 merge into each other. The leg 83 is termed with an extension 84 at its lower end to provide a stop which coacts with the lower side edge oi' arm 11. The top edge of leg 8I normally opposes the bottom edge of lever arm H. The leg OI forms a combined support and stop for lever 1 I. The inner end edge of lever arm 1| normally opposes the lower portion oi the outer side edge of leg 82. The arm 15 corresponds in weight to the combined weight of arms 16, 11 and member 80.

The manner in which the mechanisms 53, 54 are shifted to close valve 55 and to open valve 86 will be hereinafter referred to.

Extending up through the member 21 into chamber 34 and to a point in proximity to cross head 86 is the feed line or pipe I0 which is normally open at its outlet or upper end 85 and func tionson the operation of the pump 2 to feed the oil or liquid into the chamber 34. Operating in the'said outlet end 85 is the fluted stem 86 of the closure valve 55 for said outlet. Extending up through the member 21 into the chamber 34 and to a point in proximity to the cross head 36 is an overflow pipe 81 having its upper or intake end 81' permanently open. Extending up through the member 21 into the chamber 34 to a point a short dktance above member 21 is an oil or fluid conducting ofi pipe 88 which has its upper or intake end 39 normally closed by valve 56. The latter hasa fluted stem 90 which is arranged within the upper end of pipe 08. The lower end of the letter at a point below member 21 opens into the overflow pipe 81. Extending upwardly into the float chamber 24 is a vertically disposed overflow pipe 9| having its upper end permanently open and arranged below the top of chamber 24. The pipe'QI is attached at its lower end to a tubulxr coupling 92 which extends into opening 20 and is secured to member I5. Connected with the pipe it by the coupling 92 is a fluid conducting oil line 93 which leads to structure 1. The overflow pipe 81 opens into. the line 93.

Extending into opening 2| and secured to member I5,.as well as communicating with chamber 24 is a service line 94 for feeding the oil to its point of destination or consumption.

The pipe or line I0 passes through slot I9. The pipes88, 89 pass through slot I8. The pipe I0 is of the same capacity as are the pipes 81, 88 and 9|.

The structure 1 comprises a sectional housing 95 provided with a partition 96 forming a pair of chambers 91, 98 the former being for housing a mercoid switch 99 and the latter for housing a liquid or oil operated rocking device I00 for connection to and for opening and closing the switch 99. The top wall IOI of chamber 98 is provided centrally thereof with a depending web I02. The device I00 includes a body part I03 formed of a pair of side walls I94, a bottom consisting of a pair of spaced oppositely disposed sections I85, I06 inclining upwardly from the inner to the outer ends thereof and merging into the bottoms of said side walls, an inverted lower V-shaped web I01 integral with the inner ends of said sections and the lower part of the inner faces of said side walls, an upper V-shaped web I08 integral with the upper part of the inner faces of said side walls, a coupling web I09 merging into the inner faces. of the side walls and connecting the top of web. I01 to the bottom of web I08, trunnions H0 and III extending outwardly from the outer faces of and disposed at the vertical center of said side walls. The trunnion I I0 is journaled in and extends from one end of housing 95 so access can be had thereto. The trunnion III is journaled in partition 96 and has the switch 99 connected thereto. The outer end of trunnion i It is threaded for securing therewith a removable protecting cap I I2 therefor.

The structural arrangement of the device I03 provides it in the form of a liquid or oil dumping receiver pivotally suspended in chamber 98 and formed with a pair of compartments or buckets H3, H4 each open at its top and outer end. The hy-pass II is connected to the top of housing 95 at a point, as at II5, for discharging into compartment H3. The line 93 is connected to the top of housing 95 at a point, as at 5', for discharging into compartment I I4. The web I02 coacts with one of the legs of web I08 for separating compartment II3 from compartment H4 and the web I02 coacts with the other leg of web I08 for separating compartment II4 from compartment II3 during the oscillating or rocking of device I00. The liquid or oil when discharged into each compartment will be dumped therefrom after device I00 is shifted in one direction or the other by the weight of the oil or liquid. Each compartment is extended upwardly at an inclination with respect to the trunnions to receive the liquid or oil. The weight of the latter discharged into a compartment will lower such compartment, elevate the other and the compartment lowered by the weight of the liquid or oil will dump the latter into chamber 98 from where it is conducted off by the pipe I I6 which communicates with chamber 98 and opens into the tank 4. The bottom I I1 of housing 95 slopes toward the intake of pipe H6. The trunnion III provid;s for the shifting of the switch 99 to open and closed position depending upon the direction of movement of such trurmion caused by the rocking in opposite directions of device I00.

Circuit connections controlled by the switch 99 are indicated at H1, H8 and aplug H9 is employed for electrically coupling the conductor 8 to said circuit connections. The housing 95 at its bottom is formed with a socket I20 to receive plug II9. When compartment II3 of device I09 is lowered by the weight of the liquid or oil supplied thereto the switch 99 will be moved to open position and the operation of the pump will be discontinued. When compartment II4 of device I00 is lowered by the weight of the liquid or oil supplied thereto the switch 99 will be moved to closed position causing the operation of the pump. The manner in which the liquid or oil is conducted to compartments I I3, II4 for lowering them will be hereinafter referred to.

Operating in chamber 34 is a float I2I provided with a. vertically disposed oblong stem I22 formed with a pair of lengthwise extending slots I23, I24 (Figure 4). The slot I23 is of greater length than slot I24 and arranged below the latter. The stem I22 extends up through slot M and into the slotted channel-shaped enlargement 42. The lower terminal portion 61 of lever 60 extends through slot I23. The arm 15 of lever 14 extends through enlargement 42 and slot I24. The portion 61 of lever 60 is arranged in the path of the bottom wall I25 of slot I23 wherebyon the upward movement of the float I2I which carries stem I22 therewith wall I25 will engage portion 61 and rock lever 60 on its pivot in a direction to lower link 51 for moving valve or closure 55 to a position to close the outlet end 85 of line I0. The free end of lever arm 15 is arranged in the path of the bottom wall I26 of slot I24 whereby when stem I22 is elevated such wall will engage lever arm 15 and cause lever I4 and member 80 to assume the position shown in Figure 6.

With respect to the operation of the apparatus, it will be assumed that the liquid fuel is rising in the chamber 34 and that lever 14 is in the position shown in Figure 2. The float rises until wall I26 engages the under side of lever arm I5. Further movement of the float causes I5 to swing counter-clockwise upward and pivot point I9 moves downward, member 80 pivoting clockwise with respect to pivot I9, while the outer surface of arm 82 slides beneath arm II without moving the latter. Towards the end of the upward movement of the float, the upper surface of arm 82 moves below arm II, and member 80 swings counter-clockwise on 19 until 84 rests under arm 11, as shown in Figure 6. Valve 56 would have remained closed during all this time, while during the last part of the rise of float I2I, valve 55 would have been closed by lever arm 62. With both valves 55 and 56 closed, liquid from the pump by-passes into pipe II and chamber H3, tilting I and breaking the motor circuit. As the float lowers, wall I25 moves away from arm 61 and valve 55 is almost immediately opened, due to weight I55 moving lever arm 62 upward. During this time the combined weight of lever I I, rod 68 and valve 56 maintains lever I in the position shown in Fig. 6. When the float has lowered so that wall I 2? of rod I22 engages the upper surface of lever arm I5, the latter follows the descent of the float, and the upper surface of member 82 raises arm II to open valve 56 (see Fig. 7). This allows liquid from tank 34 to enter chamber H4, rocking member I00 to start the pump (Fig. 3). While the pump is starting up, the float I2I continues to lower, due to the flow of liquid through pipes 88 and I29, and surface 82 passes out of contact with lever 'II, permitting the latter to drop and close valve 50, as seen in Fig. 2. As the liquid level rises due to the operation of the pump, this cycle is repeated.

The compartment H4 of device I00 will receive liquid or oil when pipe 88 is open. Such compartment being in an elevated position the weight of such liquid or oil supplied to compartment II4 will rock device I00 in a direction to elevate compartment I I3 and to close switch 99 to provide for the operation of the pump to feed liquid or oil to chamber 34. The compartment H3 of device I00 when in an elevated position receives liquid or oil from the by-pass II and the weight of such liquid or oil will rock device I00 in a direction to elevate compartment H4 and to open the switch 99 whereby the operation of the pump will be discontinued. When the outlet of line I0 is closed by valve 55 and the pump is still operating, a pressure will be built up in line I0 thereby opening the by-pass valve and whereby the liquid or oil will be caused to travel from line I0 through the by-pass for discharge into compartment I I3 to lower the latter thereby rocking device I00 in a direction to open the switch 39 resulting in the discontinuing of the operation of the pump and supply to chamber 34.

The pipes 81, 88, 9| and 93 may all be connected to pump starting chamber H4. Any excessive oil from these pipes would flow back to supply tank by way of return pipe I I6.

Secured to partition 28 and extending upwardly through opening 29 is a vertically dispose-d ported, chambered, flanged casting I2'I formed in its upper portion with a bore I28. The casting provides a valve housing which is formed with ports and a valve chamber indicated at I29, I30 respectively. The bore I28 and ports 529 open into chamber I30. The bottom of casting I2! is beveled to provide a valve seat ISI at the lower end of chamber I30. The ports I29 and chamber I30 establish communication between chambers 34 and 24 and communication is controlled between chambers 34 and 24 by a valve I32 coacting with seat I3I. Extending upwardly from valve I32 and through bore I23 is a stem I33. Depending from valve I32 is an inverted yoke I34.

Arranged within chamber 24 is a vertically movable float I35 for controlling valve I32 to maintain the liquid supplied to chamber 24 at a constant level resulting in a constant gravity feed through service line 94 to the point of destination or consumption. The float I35 is formed with a stem I36 which is arranged within and pivotally connected, as at I3! to the yoke I34. The constant level of the liquid within chamber 24 is indicated by dotted line I38. This level drops about .001 to provide for the liquid from chamber 34 which seeps past valve seat I 3i into chamber 24 maintaining a constant liquid level in the latter. The chamber 24 is of materially less area than chamber 34.

What I claim is:

1. A combined supply controlling and feed regulating apparatus for liquids comprising a liquid storage tank, a pump, an electric motor for operating the pump, a power line, a liquid counterbalancing switch structure interposed in said line for alternately opening and closing it to the motor, a feed line leading from said storage tank to the pump, a combined liquid receiving and liquid feed regulating mechanism, controllable means operable automatically in accordance with variations in liquid level in said mechanism for establishing communication between said mechanlsm and structure for conducting liquid to the latter for operating said structure to close the power line to the motor, a supply line leading from the pump to said mechanism, controllable means operable automatically in accordance with variations in liquid level in said mechanism for closing the supply line to said mechanism during the operation of the pump, valve controlled means for establishing communication between said supply line and structure when the supply line is closed for conducting liquid from the latter to said structure for operating said structure to open the power line to the motor, and means for permanently establishing communication between said structure and storage tank for conducting the liquid from the former to the latter.

2. A combined supply controlling and feed regulating apparatus for liquids comprising a liquid storage tank, a pump, an electric motor for operating the pump, a power line, a liquid counterbalancing switch structure interposed in said line for alternately opening and closing it to the motor, a feed line leading from said storage tank to the pump, a combined liquid receiving and liquid feed regulating mechanism, controllable means for establishing communication between said mechanism and structure for conducting liquid to the latter for operating said structure to close the power line to the motor, a supply line leading from the pump to said mechanism, controllable means for closing the supply line to said mechanism during the operation of the pump, valve controlled means for establishing communication between said supply line and structure when the supply line is closed for conducting liquid from the latter to said structure for operating said structure to open the power line to the motor, means for permanently establishing communication between said structure and storage tank for conducting the liquid from the former to the latter, and said mechanism including a buoyant structure common to and operating said pair of controllable means and acting upon the controllable means associated with the supply line in advance of the said other controllable means.

3. In a combined supply controlling and feed regulating apparatus for liquids, a liquid receiving element, a liquid fuel supply line leading from a source of supply and opening into said element, a liquid fuel conducting-oil line leading from said element, controlling means for said element operable automatically in accordance with variations in liquid level in said element for closing and opening the supply line and for opening and closing the conducting-oil line, said means including a plural lever mechanism for operating an opening and closing device for the conducting off line and a single lever for operating an opening and closing device for the supply line, means for directing an overflow from the supply line when the latter is closed, and means controlled from the conducted-01f liquid from said element and an overflow from said supply line for intermittently supplying liquid to said element, said last-named means including a discharge line for conducting the said conducted-oii-liquid and the said overflow supplied thereto to the source from which the liquid was taken by said means to supply said element.

4. In a combined supply controlling and feed regulating apparatus, comprising a combined liquid receiving and feed regulating structure including a chamber for receiving the liquid, 2. feed regulating element communicating with said chamber, a valve controlled liquid fuel supply line leading from a source of supply and opening into said chamber, a valve controlled liquid fuel conducting-off line leading from said chamber, controlling means operable automatically in accordance with variations in liquid level for closing and opening said supply line and for opening and closing said conducting-on line, said means including a plural lever mechanism carrying a link for operating the controlling valve of the conducting-off line and a lever carrying a link for operating the controlling valve of the supply line, means for directing an overflow from said supply line when the latter is closed, and means controlled from the liquid conducted off from said chamber and the overflow from said supply line for intermittently supplying liquid to said chamber, said last-named means including a discharge line for returning said conducted-off liquid and the overflow supplied thereto to the source from which the liquid was taken by said means to supply said chamber.

5. In a combined supply controlling and feed regulating apparatus, comprising a combined liquid receiving and feed regulating structure including a chamber for receiving the liquid, a feed regulating element communicating with said chamber, a valve controlled liquid fuel supply line leading from a source of supply and opening into said chamber, a valve controlled liquid fuel conducting-off line leading from said chamber, controlling means operable automatically in accordance with variations in liquid level for closing and opening said supply line and for opening and closing said conducting-off line, said means including a plural lever mechanism carrying a link for operating the controlling valve of the conducting-off line and a lever carrying a link for operating the controlling valve of the supply line, means for directing an overflow from said supply line when the latter is closed, means controlled from the liquid conducted off from said chamber and the overflow from said supply line for intermittently supplying liquid to said chamber, said last-named means including a discharge iine for returning said conducted-off liquid and the overflow supplied thereto to the source from which the liquid was taken by said means to supply said chamber, and said means including an electrically driven pump communicating with said source and an element alternately shiftable in opposite directions by said conducted-off liquid and the overflow supplied to said means for alternately opening and closing a switch in a power line circuit for the pump.

6. A combined liquid supply controlling and feed regulating apparatus comprising a liquid containing tank constituting a reservoir, an electrically operated supply pump communicating with said tank, an electric motor for operating the pump, a liquid receiving element for intermittently receiving charges of liquid from the pump, a power line leading to the motor, a switch interposed in said line, a liquid counterbalanced structure for opening and closing the switch, a gravity liquid feeding element coacting with and supported from said receiving element, a supply line leading from the pump to the receiving element, means including float controlled valves for establishing respectively communication between said structure and supply line, between said structure and the receiving element and between the structure and the tank to provide respectively for the operation of the structure in one direction by the liquid from the supply line to open the switch, the operation of the structure in the opposite direction by liquid from the receiving element to close the switch and the conducting of the liquid supplied to said structure from the latter to the tank.

7. A combined liquid supply controlling and feed regulating apparatus comprising a liquid containing tank constituting a reservoir, an electrically operated supply pump communicating with said tank, an electric motor for operating the pump, a liquid receiving element for intermittently receiving charges of liquid from the pump, a power line leading to the motor, a switch interposed in said line, a liquid counterbalanced structure for opening and closing the switch, a gravity liquid feeding element coasting with and supported from said receiving element, a supply line leading from the pump to the receiving element, means including float controlled valves for establishing respectively communication between said structure and supply line, between said structure and the receiving element and between the structure and the tank to provide respectively for the operation of the structure in one direction by the liquid from the supply line to open the switch, the operation of the structure in the opposite direction by liquid from the receiving element to close the switch and the conducting of the liquid supplied to said structure from the latter to the tank, said structure supported from the tank, and a support common to the motor, tank, pump and receiving element.

HARRY A. PALMER. 

